Remote Sensing Techniques for Soil Organic Carbon Estimation: A Review

Towards the need for sustainable development, remote sensing (RS) techniques in the Visible-Near Infrared–Shortwave Infrared (VNIR–SWIR, 400–2500 nm) region could assist in a more direct, cost-effective and rapid manner to estimate important indicators for soil monitoring purposes. Soil reflectance...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Vol. 11; no. 6; p. 676
Main Authors: Angelopoulou, Theodora, Tziolas, Nikolaos, Balafoutis, Athanasios, Zalidis, George, Bochtis, Dionysis
Format: Journal Article
Language:English
Published: Basel MDPI AG 21.03.2019
Subjects:
Atmospheric models
Carbon
Climate change
Domains
earth observation
Environmental monitoring
Laboratories
Learning algorithms
Loam soils
Machine learning
Organic carbon
Organic soils
Reflectance
Remote sensing
Sensors
Short wave radiation
Soil moisture
soil organic carbon
Soil sciences
soil spectroscopy
Soils
Spectroscopy
Spectrum analysis
Sustainable development
Trends
Unmanned aerial vehicles
Vegetation cover
VNIR–SWIR
Greece
ISSN:2072-4292, 2072-4292
Online Access:Get full text
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Summary:Towards the need for sustainable development, remote sensing (RS) techniques in the Visible-Near Infrared–Shortwave Infrared (VNIR–SWIR, 400–2500 nm) region could assist in a more direct, cost-effective and rapid manner to estimate important indicators for soil monitoring purposes. Soil reflectance spectroscopy has been applied in various domains apart from laboratory conditions, e.g., sensors mounted on satellites, aircrafts and Unmanned Aerial Systems. The aim of this review is to illustrate the research made for soil organic carbon estimation, with the use of RS techniques, reporting the methodology and results of each study. It also aims to provide a comprehensive introduction in soil spectroscopy for those who are less conversant with the subject. In total, 28 journal articles were selected and further analysed. It was observed that prediction accuracy reduces from Unmanned Aerial Systems (UASs) to satellite platforms, though advances in machine learning techniques could further assist in the generation of better calibration models. There are some challenges concerning atmospheric, radiometric and geometric corrections, vegetation cover, soil moisture and roughness that still need to be addressed. The advantages and disadvantages of each approach are highlighted and future considerations are also discussed at the end.
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ISSN:2072-4292
2072-4292
DOI:10.3390/rs11060676